CANGZHOU HAOYUAN PIPEFITTINGS MFG CO., LTD is professional offer Carbon Steel Reducing Tee T , Equal Tee ,Steel Pipe Fittings , Pipe Elbow ( 90 Degree Elbow ,45 Degree Elbow ,180 Degree Elbow , Short Radius Elbow and Long Radius Elbow ) ,Pipe Bend, Pipe Reducer (Concentric Reducers ,Eccentric Reducers ), Pipe Cap. Flange, bends, socket and threaded fittings, seamless pipe . Our Steel pipe include Seamless Pipe round ,Seamless Steel Pipe ,ERW Steel Pipe ,Lsaw Steel pipe ,Galvanized Steel pipe ,Stainless Steel Pipe ,Rectangular Pipe . 304/316 Ss Concentric Reducers Compression process: stainless steel and carbon steel Low alloy steel necking coefficient is different, the first press of stainless steel up to 0.65 to 0.7, the next few is 0.85 to 0.9. Carbon steel and low alloy steel is generally 0.7 to 0.9, usually pressed can be pressed for 1 to 3 times, but the material properties of different will appear for 4 consecutive suppression. Lubrication when pressed, pressed by the…